Sylvania 5933 807W FU7 Vacuum Tube Sylvania 5347 new in box Silvertone 6LJ8

new in box Silvertone 6LJ8 tube tested to spec on our Paul Hart-calibrated TV7/U

pre-oil-embargo pressing and it sounds very good

new in box RCA 6CB6A / 6CF6 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Admiral 24BF11 tube tested to spec on our Paul Hart-calibrated TV7/U tube tester

There were no shorts or gas and it measured a perfectly-balanced 41/41 where minimum (65%) is 32/32 and 100% is 49/49

Sylvania 5933 807W FU7 Vacuum Tube Sylvania 5347 new in box Silvertone 6LJ8This Sylvania 5933 807W FU7 output tube was tested on our Maxi Matcher 2 for shorts, gas and transconductance with 400 volts on the plates and a bias of 48 volts. There were no shorts or gas. Plate current draw was 17. 2 milliamps while transconductance measured 2050 micromhos. (New 5933s typically test from the mid teens to mid 30s with transconductance from 2200 micromhos). I am playing it now in my Musical Paradise 301 MK 3 (with an adapter, not